| 等价分布源方法新发展 |
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| 引用本文： | 王晓宇,孙晓峰.等价分布源方法新发展[J].工程热物理学报,2006,27(Z1):109-112. |
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| 作者姓名： | 王晓宇 孙晓峰 |
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| 作者单位： | 北京航空航天大学407教研室,北京,100083 |
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| 摘 要： | 本文以广义Lighthill方程和广义Green函数为基础给出任意截面管道声传播计算模型,同时应用等价分布源方法建立了包含声衬影响的声传播模型,该方法避开了复杂的管道特征值计算,并在此基础上以积分变换发展了等价分布源方法,免去了声源及观察点匹配时产生的奇异性,使该方法大大简化,易于工程实际计算.此外,本文还给出了特殊截面管的算例.
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| 关 键 词： | 等价分布源方法 管道声传播 声衬 |
| 文章编号： | 0253-231X(2006)Suppl.1-0109-04 |
| 修稿时间： | 2006年1月25日 |
DEVELOPMENT OF THE EQUIVALENT SOURCE SURFACE |
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| WANG Xiao-Yu,SUN Xiao-Feng.DEVELOPMENT OF THE EQUIVALENT SOURCE SURFACE[J].Journal of Engineering Thermophysics,2006,27(Z1):109-112. |
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| Authors: | WANG Xiao-Yu SUN Xiao-Feng |
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| Abstract: | This paper presents a computational model for the sound wave propagation in a duct with arbitrary cross-section on the basis of the generalized Lighthill equation.With the method of equivalent source surface,a new numerical method is also constructed in this investigation,which includes the effects of the liners on sound propagating and avoids calculating the complex eigenvalue in lined ducts.By using integral transformation,the solution of the model has also been discussed and the relevant numerical results are compared with the existing data,which show good agreement between each other. |
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| Keywords: | equivalent source surface duct sound propagation liner |
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